hiroshi shimazaki, nhk world, salt. >>> japanese workers are known for putting in long hours at the office. many spend a lot of time behind desks, which takes a toll on their bodies. now they're being encouraged to be more active on the job to improve health and productivity. >> reporter: this is a major software development company in yokohama. about 700 engineers use computers for long hours. because of the sedentary nature of their work many are suffering from obesity and stiff shoulders. so when the company moved in august, it designed the new office to promote physical activity during work hours. a floor in the hallway has a series of lines corresponding to one's body height. for example, a 175 centimeter tall person is encouraged to walk with an 80 centimeter stride. that's because lengthy strides can burn more calories. this chair has a small seat with a unique arm rest that moves in a wide range. this helps the body release tension by twisting the waist. these are balance balls that help employees straighten their backs for good posture. moreover, the office layout encourages worke